Furuno FE-700 - Page 12

5
Switching Regulator Circuit
The switching regulator on the ANLG board generates 100 V for TX amplifier, 9 V for LCD
inverter and 15/12/5 V for other circuits.
R49 (+5V Adj. )
R50 (Freq, Adj. )
B
C
D
A
E
Figure 1.4 Switching regulator circuit on the ANLG board
100V
12V
9V
5V
15V
Power ON/OFF
Note: Waveforms at A/B/C/D/E in above circuit diagram are found in figure 1.5.
1.3 POWER SUPPLY